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chi squares
Vascular III statistical analysis tool
Term | Definition | Formula |
---|---|---|
Sensitivity | The ability of a test to detect disease | TP ÷ (TP+FN) |
Specificity | The ability of a test to identify normality | TN ÷ (FP+TN) |
Positive Predictive Value | The percentage of non-invasive tests which accurately predict abnormality | TP ÷ (TP+FP) |
Negative Predictive Value | The number of non-invasive tests which accurately predict normality | TN ÷ (TN+FN) |
Accuracy | The overall percentage of correct non-invasive diagnoses (how well does your lab detect and rule out disease?) | (TP+TN)÷(TP+FP+TN+FN) |